Former UFC welterweight champion Georges St-Pierre could be returning to the UFC in as little as four months.

St-Pierre, according to BloodyElbow.com, entered the United States Anti-Doping Agency (USADA) pool of athletes on August 10. According to the agreement USADA has with the UFC, any fighter coming out of retirement, like St-Pierre, has to make themselves available for four months of USADA testing before they can fight again for the UFC.

There is an exemption to that policy, one that the UFC used to get Brock Lesnar on the UFC 200 card. It allows the UFC to bypass the four-month requirement “in exceptional circumstances or where the strict application of that rule would be manifestly unfair to an athlete.”

St-Pierre, who has long fought for drug testing in MMA, is not interested in receiving that exemption.

“I don't want to be an exception, because I was very outspoken about performance-enhancing drugs,” said St-Pierre. “It would be bad for my reputation if I would have an exemption—I don't want to have a free pass, I want to be like everybody else. That's why I'll be starting the process August 10. I don't have any fight yet, but it's gonna happen now, because I'm getting tested, if I'm getting tested it's for a reason.”

One fight that St-Pierre could take is with UFC welterweight champion Tyron Woodley. Moments after winning the title at UFC 201, Woodley called for a fight with St-Pierre, who replied that he would be interested in the matchup.

The one drawback to St-Pierre entering the USADA pool at this time is that the four-month wait would knock him out of competing in UFC 205 in New York. That fight card is scheduled for November 12.

St-Pierre last fought in November 2013, beating Johny Hendricks to retain his title. He retired in the cage after the fight.